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# license agreements. See the NOTICE file distributed with
# this work for additional information regarding copyright
# ownership. Elasticsearch B.V. licenses this file to you under
# the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#  http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied.  See the License for the
# specific language governing permissions and limitations
# under the License.

# used only in the Ruby execution engine
module LogStash
  class SignalEvent
    def flush?; raise "abstract method"; end;
    def shutdown?; raise "abstract method"; end;
  end

  class ShutdownEvent < SignalEvent
    def flush?; false; end;
    def shutdown?; true; end;
  end

  class FlushEvent < SignalEvent
    def flush?; true; end;
    def shutdown?; false; end;
  end

  class NoSignal < SignalEvent
    def flush?; false; end;
    def shutdown?; false; end;
  end

  FLUSH = FlushEvent.new
  SHUTDOWN = ShutdownEvent.new
  NO_SIGNAL = NoSignal.new
end
